9 things you never knew about the 'Godfather' movies from the stars and director

“I was disappointed in the book when I first read it because it’s very long," the director said.

“The studio didn’t want me after they hired me,” Pacino said. “I was living on 90th and Broadway at the time. I walked to the Village and back. I did it every day, thinking about this role. Just thinking where I could go with it. I came, and started filming it. I was dizzy. I was new to film. We were theater actors.”

“I always felt like I was the most outsider, weird person,” she said. “Like, why was I cast again? But then I had a couple good scenes with Al.”

"We got so loaded after that wedding sequence," Pacino said. "We were theater actors, and we were not used to film. The whole thing had sort of a surreal feel to it. So we got back and started drinking."

“I found it to be a very emotional experience,” he said. “There’s a lot I forgot about the making of it.”

Actors Robert Duvall and James Caan reminisced about the fun times they had on the set. They would try their hardest to make their very serious cast member Marlon Brando laugh.

“During the wedding scene, we were all mooning each other,” Duvall said.

“I looked at the footage in a scientific way. I had to find spots where I could imitate what he was doing. I enjoyed it,” De Niro said.

Keaton was visibly taken aback upon learning this revelation about the origin of her character’s story.

“This film could be made today, but it wouldn’t get a go-ahead from a studio,” the director said. “The first film was made for about $6.5 million. The second was made for $11 or $12 million. It would never get a green light today.”